You don't need model for the pivot table, so you only need two models for this, the User model and Group model.

• The User hasMany Group that he created, you can name the relation whatever you want.

• The User can be a member of some groups and also group can have some user members. So User belongsToMany Group and Group belongsToMany User.

if your pivot table name is not using eloquent naming convention, you have to pass the pivot table name to the second parameter of belongsToMany method.

yes, you just need to specify relantionship like this

in User

public function groups()
{
     return $this->belongsToMany(Group::class);
}

in Group

public function users()
{
     return $this->belongsToMany(User::class);
}

After you can get group members from the group like

$users = $group->users

and groups of the user

$groups = $user->groups

Thank you for your response .

Actually when a user inter into the system , user can just join a specific group without creating his own group . By these two Model its not possible to relation . In this reason i added GroupMember model .

How can possible to make relation ? please tell me .

why is it not possible ?

you can just add user to the group by

$user->groups()->attach($group);

here what is the meaning of $group inside attach() ?

that is a group object that user will be joined to.

e.g.

$group = Group::first();

$user->groups()->attach($group);

or you can also pass the group id

$user->groups()->attach(1);

https://laravel.com/docs/5.4/eloquent-relationships#updating-many-to-many-relationships

When i want to find my created group its not working , some errors are showed .

I already joined User and Group models using hasMany() relation to get all groups of a user.

what error you'e got ?

Suppose you are a user . You already created several groups .

example : group name.

1. laravel
2. php
3. html

you want to get your all groups list as well as you joined another groups like Javascript , CSS you want to show your created groups and also your joined groups. Your created groups are :

1. laravel
2. php
3. html

joined groups:

1.Javascript 2.CSS

Also you want to show how many members of your laravel group and their details .

in your User model now, at less there should be two relations to Group model

first one is the relation of owning group that has relation of hasMany

second one is the relation of joined group that has relation of belongsToMany

in example

// User class
public function owningGroups() {
    return $this->hasMany(Group::class);
}

public function joinedGroups() {
    return $this->belongsToMany(Groups::class);
}

then you can get groups that user created by

$user->owningGroups;

and groups that user joined

$user->joinedGroups;

Sorry , it is not working .

what's wrong?

what's not working ? what error you got ?

please make it three model . when multiple users want to join a group , how can i store these user_id in a single row ?? For this reason we need one extra table .

in group_members table i include the data as follows :

id ->user_id ->group_id

1. ->2->1,
2. ->4->1,
3. ->8->2

But you mentioned earlier that two tables can possible to store these data . how ?

oh i'm sorry i misstyped above, i mean you only need two models and still with three tables.

i will edit it.

Ok . I'm waiting for your response

what else ?

everything is right except my misstyped in first comment.

so you have 3 tables users, groups, group_user, and also 2 Models User model and Group model.

How can write , i can't understand . what can i do by 2 models using three tables?

you can read here

https://laravel.com/docs/5.4/eloquent-relationships#many-to-many

https://laravel.com/docs/5.4/eloquent-relationships#updating-many-to-many-relationships

I already read it but little bit confused . please , If you create the relations then i will be helpful .Also how can retrieve these data .

thanks

i have described it above, either the relation or how to retrieve data

Thank you .

I think what you are trying to achieve is

    User has many groups,
    and Group has many users,

This is like .. I can eat multiple mangos and one mango can be eaten by many people.

Therefore, #model User group

 #tables
       users
      group_user
     groups 

relation is managed by the unique identifier, keys from users table, or from groups table.

          users table 
               id 
               name
               location

         groups table
              id 
              name
              location
              address


         group_user table( this is pivot table)
             id
             user_id
             group_id

            You can write
             http://developed.be/2013/08/30/laravel-4-pivot-table-example-
             attach-and-detach/


            https://laravel.com/docs/4.2/eloquent#many-to-many

@babind

Thank you so much for giving such a real example .